FAR INFRARED ANTIFERROMAGNETIC RESONANCE IN MnO AND NiO,

Abstract

The uniaxial dipolar anisotropy in antiferro magnetic MnO and NiO aligns the two opposing sublattice moments in an easy (111) plane. The two normal modes for small oscillations of the sublattice magnetizations about a preferred direction within this plane are both nondegenerate and linearly polarized. The high frequency mode has been observed at low temperatures (2 K) at 27.5 and 36.6 cm in MnO and NiO, respectively. In agreement with the unobservably small second order Zeeman shift expected for these nonde generate modes, a 10.7 koe field was found to have no effect on the observed resonance fre quencies. Increasing the sample temperature decreases the frequency of the mode in each case. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1963
Accession Number
AD0419634

Entities

People

  • A.j. Sievers
  • M. Tinkham

Organizations

  • University of California, Berkeley

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Agreements
  • Anisotropy
  • Frequency
  • Frequency Bands
  • Low Temperature
  • Magnetization
  • Motion
  • Oscillation
  • Radio Frequency
  • Resonance

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Powder metallurgy of Titanium alloys.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.